Fountain pen



June 17, 1924.

FOUNTAIN PEN- xiled may v, 1925 Patented June 17, 1924o UNITED STATES HARRY MITCHELL KOECNIG, 0F MILWAUKEE, WISCONSIN.

FOUNTAIN PEN.

Application filed May 7, 1923. Serial No. 637,234.

To all whom t may concern:

Be it known that I, HARRY MITCHELL KOENIG, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Fountain Pens, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

This invention relates to fountain pens, and has for one of its objects to provide a pen of this character having an ink reservoir and a feed bar or other means wherein provision is made for cutting off or opening communication between the said feed bar and the reservoir at will, whereby when such communication is closed, leakage of ink from the pen will be wholly prevented.

A further object of the invention -is to provide a pen of the class described having a relatively simple and effective valve for controlling communication between the ink reservoir andthe feedbar.

A still further object of the invention is to provide a pen of the self-filling type having two separate ink chambers, communication between whichris controlled by valves to the end that the flow of ink from one chamber to the other may be readily controlled. Y

A still further object of the invention is to provide a pen .which will not leak, while at the same time it will always. be ready to write.

A still further object of the invention is to provide a pen Vwhich will be simple in construction, relatively inexpensive to manufacture and more eicient in operation than those which have been heretofore proposed.

With the above and other'objects inview, which will appear as the description proceeds, the invention consists in the novel details of construction and combinations of parts more fully hereinafter described and particularly pointed out in the appended claims.

Referring to the accompanying drawing, in which like numerals designate like parts in all the views;` H i Figure 1 isa central vertical sectional view, partly in elevation of 'a fountain pen, made in accordance with the presentv invention; s I y I 4 I Fig. 2 is a view similar to Fig. 1, 'showing the main ink reservoir collapsed for the purpose of filling the pen;

Fig. 3 is a horizontal cross-sectional view, taken approximately on the plane indicated by the line 3 3 in Fig. 1;

Fig. 4 is .an enlarged detail sectional view of the lower portion of the pen barrel and the feed bar;

Fig. 5 is a horizontal cross-sectional view, taken approximately on the plane indicated by the line 5 5 in Fig. 4, showing the valve in open position;

Fig. 6 is a view similar to Fig. 5, showing the valve in closed position; and,

Figs. 7 and 8 are fragmentary elevational lviews of the lower portion of the pen, showing the positions of the parts with the valve respectively in closed and open positions.

Referring more particularly to the drawings, the numeral 10 indicates the hollow tubular barrel constituting the pen body, the upper end of which may be closed by a threaded plug 11 and the lower end of which is closed by a threaded plug member 12. The member 12is provided at its upper end with a reduced portion 13, which is adapted to receive thev lower open end 14 of the rubber or other resilient collapsible tube 15. The upper end of the said tube 15 is closed, as indicated in Figs. 1 and 2, and the said tube constitutes the main ink'reservoir, as is well known in this type of pen.

The upper end ofthe plug member 12 is further reduced above the 'portion 13, as indicated at 16, and carries a suitable valve cap member 17, provided with a valve opening or port 18, see Figs. 4, 5 and 6. The said cap member 17 also serves to reinforce the 'upper reduced end 16 of the plug member 12 and tends to reduce the possibilities of the said reduced end being broken off should the ink in the reservoir member 15 become exhausted, thereby permitting such ink as might remain in the duct or passage 21'to dry and cement the feed bar 2O to plug member. y s

The plug member 12 is further provided with an axial bore 19, extending therethrough, in which is mounted the oscillatory feed bar 20, provided with the feed duct 21, see Fig. 4. The said feed Vbar 2O is rigid with the lower finger member 22 by means of which it may be o scillated within the bore 19 to move the upper end ofthe lplace and the said members, 12 and 22, are

Y provided with indentations or marks, 24 and respectively, which are adapted toV indi` cate the Aposition f the duct 21, relati'veto the valve port 18. That is, when the two marks 24 and25 are in alignment, as indicated in Fig. 8; a reinforcing cap member carried by one end of said plug and the duct 21 is in register with the port 18, thereby -opening communication from the'tube or chamber 15 to the said duct. However, when the marks 24 and 25V are out'of alignment, as indicated atV Fig. 7 ,the user will know that theV duct 21 isV out of register with the port 18, and that communication is closed off. Y y

Any .suitablev means Yfor collapsing` the tube 15 may` be provided, talthough ther Y mechanism illustrated in Figs. 1, 2' and 3 of the present drawings is' preferred.Y This said4 mechanismV comprises a downwardly extending rod member 26, rigidly carried bytheupperplug member 11, in engage ment Vwith one side of the tube 15. Y, A companion rod member 27 is slidably mounted inY the said plug member l11, as will be clear Y 'from Figs.- 1 and 2, and extends downwardly along the oppositeV side of the said tube member. Thetwo rodzmembers, 26 Vand 27, are .connected together by means of suitable links 28, so that when' the member 27 is depressed'it' Vwill moveA downwardly and be drawntowards the member 26, by the said links, to compress thetube 15 and expel the air therefrom, in the well known manner. Of icourse, if the pen point 29 is immersed in ink at'this point'A and the member 27 released upon expansionfof theftube 15, the ink'will be drawn up into the said tube, as -Will be readily understood. Of course, the member 22 should be adjusted during such Vfilling operation so that the duct 21 registers with the valve port 18, in order to permit the ink to'enter the tube 15.

The upper end of the rodA member 27 is `provided with an enlarged head 30, beneath lwhich is'placed a coiled spring 31, seated @E in-.a Vcounter-bore 32,' with which the plug v member 11 vis provided.. The said spring 31 Will normally urge the rod member 27 upwardly, thereby permitting the tube 15 to Vmaintain its normally expanded position.

A readily removable cap memberBS may be threaded upon the upper end of the plug .member 11 to'seal and Vprotect the head 30 andspring 31, as willbe readily understood, when these members are not in use for the purpose of fillingthe ink reservoir.

While the invention has been illustrated and described in connection with a self-filling pen, it will be obvious that if desired it may be applied with equa-l facility to a pen not provided with a self-lilling mechanism. It will also be apparent that the invention Vprovides a pen having two chambers, one

comprising the tube or reservoir 15, and the other comprising the duct 21, communication between which is controlled by the valve port 18.

If, after using the pen, the feed bar 20 is rotated by means of the member 22, to bring Vthe duct 21 out of register with the port 18 -ink as was in the said duct will How back into the tube or reservoir 15, and after the valve is closed it will be impossible for ink to leak out of the said reservoir.

The flow of ink from the main reservoir 15 to the pen point may also be controlled by adjusting the position of the duct 21 relative to theV port 18. Should the ink flow too freely from the said reservoir when the said port is fully opened, it is only necessary to move the member 22 slightly to partially close the valve, whereupon the How of ink will be reduced the desired extent.

' While one form of the invention has been illustrated and described it is obvious that those skilled in the art may vary the details of construction as well as the arrangement of parts' without departing from the spirit .for oscillatory movement in said plug member, said b'ar having a duct adapted to register with said port; and a finger threaded on the other end of said plug member, and rigid with said bar for oscillating the latter.

2. A fountain pen comprising a barrel; a collapsible ink reservoir within said barrel; a plug member secured in one end of said barrel andrclosing one end of said reservoir, said plug memberA being provided with an axial bore and with a reinforcing cap member on one end having a port providing communication between said reservoir and said bore; a feed bar mounted for oscillation in said bore, provided with a duct adapted to be moved into and out of register Witli said port; a pen point associated with said feed bar; and a finger member detachably carried by said plug member for oscillating said feed bar.

8. A fountain pen comprising a barrel; a collapsible ink reservoir Within said barrel; a plug member secured in one end of said barrel7 having a reduced portion entering one end of said reservoir, said plug also having a substantially axial bore; a cap carried by said reduced portion of said plug member, provided With a port afford-V ing communication between said reservoir and said bore; a feed'bar mounted for oscillation in said bore, provided With a duct adapted to be moved into and out of register With .said port; a pen point associated with said feed bar; means carried by said plug member for oscillating said feed bar; and means carried by said oscillating means and said plug member lfor indicating the position of said duct relative to said port.

In testimony whereof, I affix my signature. y

HARRY MITCHELL KOENIG. 

